Reading in a struct

Hi! I've finally gotten this program to compile, but something is quite wrong.  I run it, and nothing happens! I do run it using a data file for the input, but nothing happens.  Any ideas?  Thanks!


#include <stdio.h>

typedef struct
{
int id_no;
int house_mem;
double annual_inc;
} household_t;


void get_data(household_t *family, int *ctr)

        {
        int i;

        /* assuming user input is correct- same # of each type */


        for(i=0; i<25; i++)
                {
                scanf("%d", &family[i].id_no);
                   *ctr++;
                if(family[i].id_no==-9999)
                        i=25;
                }

        for(i=0; i<*ctr+1; i++)
                {
                scanf("%d", &family[i].house_mem);
                if(family[i].house_mem==-9999)
                        i=25;
                }

        for(i=0; i<*ctr+1; i++)
                {
                scanf("%lf", &family[i].annual_inc);
                if(family[i].annual_inc==-9999)
                        i=25;
                }

}                        


   void print_table(household_t *family, int ctr)

{
int i;

printf("Identification\t Annual\t Household\n");
printf("Number\t\t Income\t\t Members\t\t");
for(i=0; i<ctr; i++)
printf("%d\t\t %f\t\t %d\n", family[i].id_no,
family[i].annual_inc, family[i].house_mem);

}


void calc_avg(household_t *family, int ctr)
{
double total=0, avg;
int above, i;

for(i=0; family[i].annual_inc!=ctr; i++)
total=total+family[i].annual_inc;      
   avg=total/i;
printf("The average family income is %.2lf.\n\n", avg);
printf("The following families have incomes above this average:\n");

for(i=0; family[i].annual_inc!=ctr; i++)
if(family[i].annual_inc>avg)
{
printf("%d\t$%d\n", family[i].id_no, family[i].annual_inc);

above++;
}
printf("There is a total of %d families who earn above the average.", above);
}

void poverty_lvl(household_t *family, int ctr)
{
double per_pov;
int pov_lvl, i, numbelow=0;

for(i=0; family[i].annual_inc!=ctr; i++)
{                                      

         pov_lvl=7500+950*(family[i].house_mem-2);
if(pov_lvl>0)
numbelow++;
}
per_pov=numbelow/i*100;
printf(" %.2lf percent have incomes below the poverty level.",
per_pov);
}


int main(void)
{
household_t family[25];
int ctr=0;


get_data(family, &ctr);

print_table(family, ctr);

calc_avg(family, ctr);        
 
poverty_lvl(family, ctr);
}